BC 2000
DIGITAL
Audio Routing, Mixing and Processing System for Program Production Centers
HARDWARE MANUAL
56
Other characteristics and features.
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Internal warning signal indicating a failure in one of the power supplies. If a failure occurs, the
“ALARM” LED on the BC2240 controller board will light up.
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Power feed circuit designed to support hot-swapping operations.
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Bi-directional link able to transmit to/from the CU up to 8 lineal audio channels with broadcast
quality (48KHz / 24 bits). In addition, there is bi-directional control channel with a 384Kbit/s
capacity.
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Non volatile RAM memory able to store up to 8 audio messages with G722 encoding (8KHz /
8bits) and 32 seconds length (each one). These messages are read and recorded through
TDM bus.
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Supervision system for the communication link with CU.
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Protection system against short-circuits o over-consumption for each CU.
Programming jumpers.
This board has a series of internal programming jumpers (PJ). However, these jumpers are
configured at the factory and, in normal operation, do not need to be changed.
Firmware modules.
At the firmware level, this board is made up of the following modules:
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PIC microcontroller: manages board communications and start-up.
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FPGA programmable device: manages the TDM bus, the modems for communication
with CUs and the access to non volatile RAM for messages storage.
The firmware versions can be brought up to date by using the ”BC2000D Firmware Upgrade”
software application.
Signal layout in the RJ 45 connectors of the board.
BC2217 technical specifications.
RJ45 interface:
This interface consists of a audio+data digital link (12.288MHz) towards CU (it also extracts its
syncronism from it) in a pair and another link from CU in another pair. The remaining wires are
used to provide remote power (48V) to the CUs.
General characteristics.
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Approximate consumption: 4 watts (with no CUs connected).
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Approximate dimensions:
Front: 17 x 172 mm.
Depth: 255 mm.
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Approximate weight: 262 grams.
Characteristics are subject to change without notice.
Pin
'CU 1 LINK'
'CU 2 LINK'
8
Rx 1-
Rx 2-
7
Rx 1+
Rx 2+
6
GND
GND
5
GND
GND
4
+48V
+48V
3
+48V
+48V
2
Tx 1-
Tx 1-
1
Tx 1+
Tx 1+
Chassis GND
GND